Mining-car wheel



A. B. DAY.

MINING CAR WHEEL. AY 4 19 APPLlCATION L D M 1 l8. v 1,326,649,. Patented Dec. 30,1919.

ALFRED BRYANT DAY, OF OLIVER SPRINGS,

MINING-CAR VJ HEEL.

Specification of Letters Patent.

Patented Dec.30, 1919.

Application filed May 14, 1918. Serial No. 234,485.

To all whom it may concern:

Be it known that I, ALFRED B. DAY, a citizen of the United States, residing at Oliver Springs, in the county of Roane and State of Tennessee, have invented certain new and useful Improvements in Mining- Car Wheels, of which the following is a. specification, reference being had therein to the accompanying drawing.

This invention relates to mining car wheels, and more particularly to wheels of that character adapted to be rotatably mounted upon a relatively fixed axle.

It has been observed that wheels of the character under consideration become worn at that portion thereof which engages the periphery of the axle, and that whereas the main or body portion of the wheels are perfectly good and satisfactory after prolonged usage, because of the wear of the bearing portion of the hub the life of the wheel as a whole is materially shortened, and it is one of the objects of the present invention to provide a novel and improved type of mining car wheel of a character to overcome the above and other objections, and at the same time to provide a wheel, simple in. design and construction, comparatively inexpensive to produce, and highly eflicient and satisfactory in use.

In carrying out the invention, it is proposed to utilize a novel and improved removable bearing; surface or bushing for the hub of the wheel whereby to take up the wear on the wheel, and whereby as the bushing becomes worn the same may be readily removed and replaced, and a similar bushing substituted, with the result that by this substitution and renewal, the life of the wheel itself is materially prolonged.

A further object of the invention is to provide means whereby the bearing parts of the wheel may be readily oiled, and to this end the hub of the wheel proper is preferably hollow, whereby to provide an oil chamber adapted to communicate with oil passages in the removable bushing and leading directly to the axle, with the result that the wheel and associated parts are self oiled.

It is also contemplated by the invention to provide novel means of connection between the bushing and wheel, to insure movement together as a unitary structure, and novel means of connection between the wheel and axle permitting a relative rotatable movement between these parts.

scription to follow, which for a clear understanding of the invention is to be considered in connection with the accompanying drawings, which form apart hereof and wherein is disclosed, for the purpose of illustration a convenient and satisfactory embodiment of the invention.

In the drawings:

Figure 1. is a vertical section of a wheel and associated parts looking in thedirection of the arrow, certain parts including the axle being shown in elevation;

Fig. 2 is a section substantially on the line 2-2 of Fig. 1; p

Fig. 3 is a section substantially on the line 3-3 of Fig. 1 looking in the direction of the arrow, I e

With more particular reference to the drawings wherein like reference numerals refer to corresponding parts throughoutthe several views, '1 is an axle which, in the preferred embodiment of the invention, is

fixed against rotatable movement. Suitable supports for opposite ends of the axle 1 are provided, the same taking the form of pedestal members 2, having a relatively en larged part 3 forming an interior packing chamber to receive suitable felt or other packing 4. A suitable'stopo is provided on the axle 1 at a point outside the inner end of the pedestal member 2, and said axle at its opposite end is provided with an annular key engaging groove 6. A wheel 7 is provided, the same conveniently having an integral hub 8 with a closed end 9 adapted to overlie the end 10 of the axle. The hub 8 is conveniently hollow a substantial portion of its length to provide an internal annular oil chamber 11 for the reception of any suitable lubricant, which may readily be inserted into said chamber 11 through the medium of an oil inlet adjacent the end of the hub normally closed byineans of a. removable bolt or the like 12. Interposedbetween the hub 8 and axle 1 is a suitable wear-part taking theform of-a bushing 13,

its outer end in alinement with the inner wall surrounding the groov 6 of the axle,

and at its inner end projecting loosely within and spaced from the surrounding walls of the enlarged portion 3 of the pedestal 2 as illustrated in Fig. 1 at 14.

In order to connect the bushing 13 with the surrounding wall of the hub 8, the bushing and hub 8 are provided with registering grooves illustrated at 15 and 15 adapted to receive removable keys 16 and 16 respectively. These keys may b of any convenient design and construction, but are preferably of a character whereby when positioned the terminals thereof which project without the hub may be upset as illustrated at 17 whereby to secure the parts in place. The hub of the wheel is preferably provided with a cut out part or recess 18 adapted for the reception of a key block 19 which latter has a curved axle engaging portion 20 forming opposed arms :21 to overhe the sides of the axle for a substantial distance.

Because of the peculiar construction and arrangement of parts it will be observed that the outer end of th bushing 13 constitutes an abutment or stop for the key block 19, thereby doing away with screws or other retaining means for the key block to maintain the latter in the groove of the axle.

The bushing 13 is provided with spaced parts or passages 22 communicating directly with the oil chamber 11 of the hub and the axle 1 whereby a self-oiling wheel is provided.

The operation of the device will be perfectly obvious to those skilled in the art. In the application of the wheel upon the axle the bushing 13 is first applied and the key block 19 placed in the groove or recess 6 of the axle. Thereupon the wheel proper is slipped over the key block and bushing, the key block registering with the recessed part 18 of the hub 8 therefor. Finally the locking keys 15 and 15 are inserted in the registering grooves of the hub and bushing whereby these parts are secured in place. While I have illustrated a key engagement between the hub of the wheel and axle, other means of connection may be provided in keeping with the invention.

What I claim is:

1. The combination of a wheel having a hub to be sleeved over the end of an axle, a removable bushing positioned within the hub and projecting beyond the inner end thereof, and a pedestal member positioned on the axle and having a chamber overlying said projecting end of the bushing.

52. The combination of a tubular pedestal having an enlarged outer end forming an annular chamber, an axle projecting through the pedestal, a wheel having a hub sleeved upon the end of the axle, a removable bushing interposed between the wheel hub and axle, the said bushing having an inner projecting annular part positioned within the annular chamber formed by the enlarged part of the pedestal, and the hub of the wheel being spaced from the walls of the pedestal.

3. The combination of a tubular pedestal having an outer enlarged part forming a packing chamber, an axle projecting through the pedestal, a wheel having a hub part sleeved upon the axle and spaced from the pedestal, and a removable bushing sleeved upon the axle and projecting beyond the inner end of the hub whereby to engage within the packing space of the pedestal, and a packing in said space.

4. The combination of a tubular pedestal having an enlarged outer end forming an annular chamber, an axle projecting through the pedestal, a wheel having a hub sleeved upon the end of the axle, a removable bushing interposed between the wheel hub and axle, the said bushing having an inner projecting annular part positioned within the annular chamber formed by the enlarged part of the pedestal, the hub of the wheel being spaced from the walls of the pedestal, a removable retaining means interposed be tween the hub and bushing for locking these parts together.

5. The combination of a tubular pedestal having an outer enlarged part forming a packing chamber, an axle projecting through the pedestal, a wheel having a hub part sleeved upon the axle and spaced from the pedestal, and a removable bushing sleeved upon the axle and projecting beyond the inner end of the hub whereby to engage within the packing space of the pedestal, a packing in said space, locking means interposed between the hub and bushing, and retaining means interposed between the hub and axle.

6. The combination of a wheel having a hub adapted to be sleeved over the end of an axle having a peripheral groove adjacent its end, a removable bushing positioned within the hub and removably secured thereto and projecting beyond the inner end thereof, a pedestal member positioned on the axle and having a part overlying said projecting end of the bushing, the outer end of .the bushing terminating at a point in registration with the peripheral groove of the axle, and a key block positioned in the hub beyond the end of the bushing adapted to engage the peripheral groove of the axle.

7. In a wheel construction adapted to be applied to the end of an axle having a peripheral groove adjacent its end, the wheel ing means between the hub and axle comprising a removable key positioned Within the hub of the Wheel adapted to engage said groove of the axle, said key being removable from the inner end of the hub.

8. In combination with an axle having a peripheral groove, of a wheel adapted to be sleeved over the end of the axle, said wheel having a hub with an internal key recess, a key positioned Within said recess to engage the peripheral groove of the axle, a reniovable bushing interposed between the hub and axle constituting an abutment for the key, and removable transverse locking keys interposed between the hub and bushing.

9. A mining car wheel construction having a hollow hub with a closed outer end, the hub being adapted to be sleeved upon the end of an axle having a peripheral groove adjacent its end, a bushing interposed between the hub and axle, said bushing pro jeoting beyond the inner end of the hub and terminating at its outer end at a point in line with said peripheral groove of the axle, and a key block fitted to the hub adapted to overlie the outer end of the bushing and to engage the peripheral groove of the axle.

10. A wheel construction having a hollow hub with a closed end adapted to engage over the end of an axle having a peripheral groove, a bushing to be interposed between the axle and hub, means for removably securing the bushing to the hub, a removable key insertible and removable from the inner end of the hub, said key adapted to engage the peripheral groove of the axle and overlying the end of the bushing to constitute an abutment therefor.

11. A mining car wheel construction having a hollow hub with a closed outer end, the hub being adapted to be sleeved upon the end of an axle having a peripheral groove adjacent its end, a bushing interposed between the hub and axle, said bushing projecting beyond the inner end of the hub and terminating at its outer end at a point in line with said peripheral groove of the axle, a key block fitted tothe hub adapted to overlie the outer end of the bushing and to engage the peripheral groove of the axle, the hub having a hollow oil chamber or reservoir, and the bushing having openings establishing communication between said reservoir and axle, and the hub having a normally closed oil inlet communicating with said oil chamber.

In testimony whereof I hereunto afllx my signature in the presence of two Witnesses.

ALFRED BRYANT DAY. Witnesses:

L. 0. Soon, W. C. ANDERSON. 

